# Understanding Proportional Relationships with the Proximity Data Game

In the Fall as Middle School and Algebra 1 teachers look for activities to develop students’ understandings of proportional relationships, they may turn to measuring scale diagrams or using springs. One of KCP Technologies' new online Data Games called Proximity offers a new option for teachers to help students learn about proportional … Continue Reading ››

# Pass the Candy! Sweetening the Study of Probability

As part of our guest blog series, we bring you another post from Kathryn Shafer. A former middle school and high school math teacher, Kathy is now an Assistant Professor in the Department of Mathematical Sciences at Ball State University, Indiana. She's done a variety of … Continue Reading ››

# “Figuring It Out” Is Where the Learning Happens

I often get asked the question when doing webinars, workshops, or professional development training, "is there a quick way to do that" with Sketchpad, TinkerPlots or Fathom? For example, last week we had a webinar on functions, and the question came up about whether Sketchpad had a … Continue Reading ››

# School Starts Soon—Are You Tech Ready?

My daughter went to senior orientation today, a sure sign summer is almost over. When I was in the classroom, I remember getting both sad and excited around this time. Sad because my holiday was coming to an end, but excited because I was revving up to start over and try some new things in … Continue Reading ››

# ICME: The Nature of Students’ Mathematical Thinking

Like other enthusiasts of mathematics, I’m captivated by the way that mathematical ideas can explain things in the physical world around me, and by the way that I can carry out mathematical thought experiments in my mind and then apply the results to control my external physical environment.

# Exploring the Law of Large Numbers with TinkerPlots

As part of our guest blog series, we bring you a post from Kathryn Shafer. A former middle school and high school math teacher, Kathy is now an Assistant Professor in the Department of Mathematical Sciences at Ball State University, Indiana. She's done a variety of work for Key, including presenting webinars, moderating online courses, and … Continue Reading ››

# Data Visualization in the Age of HTML5

My partner and I spend a fair amount of time talking about data visualization. He's a computer programmer who works on websites that gather and display large amounts of data related to energy production and consumption. This data can be used to answer questions like: "How effective is the California Solar Initiative?" and "Where in … Continue Reading ››

# Students WANT to Learn Math

I had the honor of being part of the annual Super Saturday STEM Expo in New York City last Saturday at the Harlem Armory in Harlem, NY.  This event was presented by School Community District 5, Abyssinian Development Corporation, and Morningside Area Alliance and was … Continue Reading ››

# The Dynamic Number Project Comes to NCTM Philadelphia

It’s time for the NCTM Annual Meeting! For the past two and a half years, my colleague Scott Steketee and I have been collaborating with elementary teachers in New York and Philadelphia as they field test curriculum materials for the Dynamic Number project. We’ll be showcasing our work at three sessions during the upcoming … Continue Reading ››

# Educational Technology: What is the Cost of Free?

I am so tired of the question "why should we buy your product when we can get the same thing for free?" No, you can't. I get it, I really do. I was a teacher for a long time, wanting to improve my classroom with limited funds, and I was constantly on the hunt for "free"— free … Continue Reading ››